在健康受试者中通过趋近回避训练来改变巴甫洛夫到工具的转移:概念验证研究。

Modifying Pavlovian-to-instrumental transfer by approach avoidance training in healthy subjects: a proof of concept study.

机构信息

Department of Psychiatry and Neurosciences|CCM, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.

Faculty of Health, Health and Medical University, Campus Potsdam, Potsdam, Germany.

出版信息

Sci Rep. 2023 Jun 21;13(1):10074. doi: 10.1038/s41598-023-37083-3.

Abstract

The modulation of instrumental action by conditioned Pavlovian cues is hypothesized to play a role in the emergence and maintenance of maladaptive behavior. The Pavlovian to Instrumental transfer task (PIT) is designed to examine the magnitude of the influence of cues on behavior and we aim to manipulate the motivational value of Pavlovian cues to reduce their effect on instrumental responding. To this end, we utilized a joystick-based modification of approach and avoidance propensities that has shown success in clinical populations. To examine changes in PIT, we subjected 35 healthy participants to a series of experimental procedures: (1) Instrumental training was followed by (2) Pavlovian conditioning of neutral stimuli that were associated with monetary reward or loss. (3) In a subsequent joystick task, approach and avoidance tendencies toward conditioned cues were assessed. (4) In a transfer test, the PIT effect as the impact of conditioned cues on instrumental behavior was measured. (5) The explicit knowledge of cue-reward contingencies was assessed in a forced-choice phase. (6, 7) systematic joystick training was followed by a posttest (8) the transfer task and forced-choice test were repeated. We found no effect of training on approach-avoidance propensities in the context of this proof of concept study. A higher response rate towards negative stimuli during PIT after systematic training compared to sham training was seen. On the other hand, we saw an increased PIT effect after sham training. These results contribute to the understanding of the strength of the influence of cues on instrumental behavior. Our findings further stress the importance of context, instructions and operationalization of instrumental behavior in the framework of transfer effects.

摘要

操作性条件反射线索的调节作用被假设在适应不良行为的出现和维持中发挥作用。条件性操作反射转移任务(PIT)旨在检验线索对行为的影响程度,我们旨在操纵条件性线索的动机价值,以减少它们对操作性反应的影响。为此,我们利用了基于操纵杆的趋近和回避倾向的修正方法,该方法在临床人群中取得了成功。为了研究 PIT 的变化,我们让 35 名健康参与者接受了一系列实验程序:(1)进行操作性训练,随后(2)对中性刺激进行条件反射训练,这些刺激与金钱奖励或损失有关。(3)在随后的操纵杆任务中,评估对条件性线索的趋近和回避倾向。(4)在转移测试中,测量条件性线索对操作性行为的影响,即 PIT 效应。(5)在强制选择阶段评估对线索-奖励关系的显性知识。(6、7)进行系统性操纵杆训练,随后进行(8)转移任务和强制选择测试的后测。在这个概念验证研究中,我们没有发现训练对操作倾向的影响。与假训练相比,系统训练后 PIT 中对负性刺激的反应率更高。另一方面,我们看到假训练后 PIT 效应增加。这些结果有助于理解线索对操作性行为的影响程度。我们的发现进一步强调了在转移效应框架中,线索对操作性行为的影响的重要性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e1ac/10284857/60bb454fd550/41598_2023_37083_Fig1_HTML.jpg

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